JPH10212552A - Member for steel making hot rolling equipment excellent in wear resistance and corrosion-resistance - Google Patents
Member for steel making hot rolling equipment excellent in wear resistance and corrosion-resistanceInfo
- Publication number
- JPH10212552A JPH10212552A JP3325797A JP3325797A JPH10212552A JP H10212552 A JPH10212552 A JP H10212552A JP 3325797 A JP3325797 A JP 3325797A JP 3325797 A JP3325797 A JP 3325797A JP H10212552 A JPH10212552 A JP H10212552A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- base material
- molten metal
- hot rolling
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、製鉄熱間圧延設備
用ラッパーロール、ピンチロール、マンドレル及び鋼板
搬送ローラ等に使用する耐摩耗性、耐腐食性に優れた製
鉄熱間圧延設備用部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member for a hot rolling equipment for steel making which is excellent in wear resistance and corrosion resistance used for a wrapper roll, a pinch roll, a mandrel, a steel sheet conveying roller and the like for a hot rolling equipment for steel making. .
【0002】[0002]
【従来の技術】製鉄熱間圧延設備におけるコイラー用ラ
ッパーロール、ピンチロール、マンドレル及び鋼板搬送
ローラは、鋼板が断続的に圧延されることにより、鋼板
先端部の衝突力を受ける。また、一般にこれらのロール
の周速度は、鋼板の巻き取り形状を良くするため、更
に、ミスコイルのような操業トラブルを防止し、初期巻
き付きを良くするために、鋼板との速度差を持たせてお
り、その結果、ロールと鋼板との間でスリップが発生し
ている。また、圧延機スタンドの前後に配置された鋼板
搬送ローラには、鋼板が圧延機に噛み込む時や反転する
時に、鋼板との間で激しいスリップが発生する。一方、
高温の鋼板表面に発生したスケールを圧延前に除去する
ための高圧水や、鋼板及びロール表面を冷却するための
冷却水がこれらのロール表面に掛かる構造となってい
る。これらのロール表面の耐摩耗性、耐腐食性を向上さ
せるため、「わが国における最近のホットストリップの
製造技術」(日本鉄鋼協会、昭和62年8月10日発
行)、頁295、296に示されているように、〔C
r〕<13重量%以下、主として3〜7重量%CrのC
r系の肉盛材料が採用されてきた。具体的には、構造用
鋼、鋳鋼などからなるロール母材の表面に〔Cr〕の他
に、〔C〕<0.4重量%、〔Mo、V〕<10.0重
量%の組成からなる、鉄系材料を溶接肉盛法により被覆
した後、熱処理により硬度をHs>70とするか又は、
同組成の鉄系材料を鋳掛けする方法により硬化層を被覆
していた。2. Description of the Related Art A wrapper roll for a coiler, a pinch roll, a mandrel, and a steel sheet conveying roller in a hot rolling mill for steelmaking are subjected to the impact force of the front end of the steel sheet as the steel sheet is intermittently rolled. In general, the peripheral speed of these rolls has a speed difference from the steel plate in order to improve the winding shape of the steel plate, further prevent operation troubles such as miscoils, and improve the initial winding. As a result, slip occurs between the roll and the steel plate. In addition, the steel sheet transport rollers disposed before and after the rolling mill stand cause a severe slip between the steel sheet and the steel sheet when the steel sheet bites into the rolling mill or reverses. on the other hand,
It has a structure in which high-pressure water for removing scale generated on the surface of a high-temperature steel sheet before rolling and cooling water for cooling the steel sheet and the roll surface are applied to these roll surfaces. To improve the abrasion resistance and corrosion resistance of these roll surfaces, see “Recent Hot Strip Manufacturing Technology in Japan” (The Iron and Steel Institute of Japan, issued August 10, 1987), pages 295 and 296. [C
r] <13% by weight, mainly 3-7% by weight of Cr
r-based overlay materials have been employed. Specifically, on the surface of a roll base material made of structural steel, cast steel, etc., in addition to [Cr], a composition of [C] <0.4% by weight and [Mo, V] <10.0% by weight After the iron-based material is coated by the welding overlay method, the hardness is set to Hs> 70 by heat treatment, or
The hardened layer was covered by a method of casting an iron-based material having the same composition.
【0003】本出願人が提案した特開平3−23810
7号公報において、〔C〕0.3〜1.0重量%、〔S
i〕0.3〜1.5重量%、〔Mn〕0.3〜1.5重
量%、〔Ni〕0.5〜3.0重量%、〔Cr〕3.0
〜8.0重量%、〔Mo〕0.5〜3.0重量%、V、
Nb及びWの中の1種又は2種以上0.1〜1.0重量
%を含有した溶湯を、母材の外表面に溶着させながら冷
却により凝固させる特殊鋳掛け法により製造されたコイ
ラー用鉄基ロール材は、従来のCr系の溶接肉盛ロール
に比べて、2.5倍以上の耐久性を有している。また、
特願平7−256836号において、特殊鋳掛け法によ
り〔C〕0.5〜2.0重量%、〔Si〕0.1〜1.
5重量%、〔Mn〕0.1〜1.5重量%、〔Cr〕
2.0〜15.0重量%、〔Mo〕2.0〜10.0重
量%、〔V〕1.0〜8.0重量%、〔W〕1.0〜1
0.0重量%、〔Co〕1.0〜15.0重量%を含有
した鉄基耐摩耗、耐腐食ロール材が提案され、耐摩耗性
と耐腐食性の向上が図られた。Japanese Patent Application Laid-Open No. 3-23810 proposed by the present applicant
No. 7, [C] 0.3 to 1.0% by weight, [S
i] 0.3 to 1.5% by weight, [Mn] 0.3 to 1.5% by weight, [Ni] 0.5 to 3.0% by weight, [Cr] 3.0
To 8.0% by weight, [Mo] 0.5 to 3.0% by weight, V,
Iron for coilers manufactured by a special casting method in which a molten metal containing 0.1 to 1.0% by weight of one or more of Nb and W is welded to the outer surface of a base material and solidified by cooling. The base roll material has a durability 2.5 times or more as compared with a conventional Cr-based weld overlay. Also,
In Japanese Patent Application No. 7-256836, [C] is 0.5 to 2.0% by weight and [Si] 0.1 to 1.
5% by weight, [Mn] 0.1 to 1.5% by weight, [Cr]
2.0-15.0% by weight, [Mo] 2.0-10.0% by weight, [V] 1.0-8.0% by weight, [W] 1.0-1.
An iron-based abrasion-resistant and corrosion-resistant roll material containing 0.0% by weight and [Co] of 1.0 to 15.0% by weight was proposed, and improvement in wear resistance and corrosion resistance was achieved.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、近年、
鋼の熱間圧延ラインにおいては、高圧化、高速連続圧延
化、ステンレス鋼や珪素鋼のような難圧延材の増加、或
いは製品の薄物化が進み、この結果ロールの使用条件が
苛酷化の一途を辿っている。例えば、コイラー用ラッパ
ーロール、ピンチロール、マンドレル及び鋼板搬送ロー
ラについて、摩耗、腐食が激しく、耐摩耗性、耐腐食性
向上のニーズが高くなっている。上記摩耗、腐食が増大
することによって、鋼板製品の表面性状が悪化すると共
に、ロールの取り替え頻度も多くなり圧延効率が低下し
ている。前記刊行物に記載されたCr系の肉盛材料にお
いては必ずしも、熱間圧延ラインの益々高くなってきた
要求レベルを満足するものではなく、前記特開平3−2
38107号公報及び特願平7−256836号に記載
されている特殊鋳掛け法により製造されたロール材にお
いても、更に耐久性を向上する必要がある。However, in recent years,
In the hot rolling line of steel, high pressure, high speed continuous rolling, increase of difficult-to-roll materials such as stainless steel and silicon steel, or thinning of products are progressing, and as a result, the use conditions of rolls are becoming severer. I am following. For example, a wrapper roll for a coiler, a pinch roll, a mandrel, and a steel sheet conveying roller are severely abraded and corroded, and there is an increasing need for improved abrasion resistance and corrosion resistance. Due to the increase in the wear and corrosion, the surface properties of the steel sheet product are deteriorated, and the frequency of replacing the rolls is increased, and the rolling efficiency is reduced. The Cr-based overlay material described in the above publication does not always satisfy the increasingly high required level of the hot rolling line.
It is necessary to further improve the durability of the roll material manufactured by the special casting method described in Japanese Patent Application No. 38107 and Japanese Patent Application No. 7-256836.
【0005】本発明は、かかる事情に鑑みてなされたも
ので、耐摩耗性、耐腐食性を高位の水準に高め、耐久性
の優れたコイラー用ラッパーロール、ピンチロール、マ
ンドレル及び鋼板搬送ローラなどに使用する耐摩耗性、
耐腐食性に優れた製鉄熱間圧延設備用部材を提供するこ
とを目的とする。The present invention has been made in view of the above circumstances, and has improved wear resistance and corrosion resistance to a high level, and has excellent durability such as a wrapper roll for a coiler, a pinch roll, a mandrel, and a steel sheet conveying roller. Wear resistance,
An object of the present invention is to provide a member for hot rolling equipment for steel making which has excellent corrosion resistance.
【0006】[0006]
【課題を解決するための手段】前記目的に沿う請求項1
記載の耐摩耗性、耐腐食性に優れた製鉄熱間圧延設備用
部材は、電磁誘導加熱コイルを備えた耐火性加熱型の下
部に、冷却型を一体的に配置した組み合わせモールドを
用い、該組み合わせモールドの内部に鋼を素材とする中
実又は、中空の母材を同心垂直に挿入し、該母材の外周
の環状空隙部に、別途準備した溶湯を注入し、前記母材
を断続的に降下させて、該母材外表面に前記溶湯を溶着
させながら、冷却により凝固せしめて、該母材の外周に
肉盛層を形成し、所定の熱処理、機械加工を行なって製
造される耐摩耗性、耐腐食性に優れた製鉄熱間圧延設備
用部材であって、前記溶湯の成分は、〔C〕0.5〜
2.5重量%、〔Si〕0.3〜3.0重量%、〔M
n〕0.3〜3.0重量%、〔Cr〕2.0〜15.0
重量%、〔Mo〕2.0〜15.0重量%、〔V〕2.
0〜15.0重量%、〔W〕10.0重量%以下、〔C
o〕10.0重量%以下、及び〔Nb〕0.5〜5.0
重量%、〔Ti〕0.5〜5.0重量%、〔Zr〕0.
5〜5.0重量%からなる群から選ばれた1種又は2種
以上、残部は実質的にFe及び不可避的不純物元素から
なると共に、−2≦C−(0.06Cr+0.063M
o+0.033W+0.236V+0.129Nb+
0.251Ti+0.132Zr)≦0の式を満足す
る。According to the present invention, there is provided a semiconductor device comprising:
The wear resistance of the described steel member for hot rolling equipment with excellent corrosion resistance uses a combination mold in which a cooling mold is integrally disposed below a refractory heating mold having an electromagnetic induction heating coil. A solid or hollow base metal made of steel is inserted concentrically and vertically into the interior of the combination mold, and a separately prepared molten metal is injected into an annular space around the base metal, so that the base material is intermittently inserted. While the molten metal is welded to the outer surface of the base material, and solidified by cooling to form a build-up layer on the outer periphery of the base material, and subjected to a predetermined heat treatment and machining to produce a heat resistant material. Abrasion, a member for hot rolling equipment with excellent corrosion resistance, wherein the component of the molten metal is [C] 0.5 to
2.5% by weight, [Si] 0.3 to 3.0% by weight, [M
n] 0.3 to 3.0% by weight, [Cr] 2.0 to 15.0
% By weight, [Mo] 2.0 to 15.0% by weight, [V] 2.
0 to 15.0% by weight, [W] 10.0% by weight or less, [C
o] 10.0% by weight or less, and [Nb] 0.5 to 5.0.
%, [Ti] 0.5 to 5.0% by weight, [Zr] 0.
One or more selected from the group consisting of 5 to 5.0% by weight, the balance substantially consisting of Fe and unavoidable impurity elements, and -2 ≦ C- (0.06Cr + 0.063M).
o + 0.033W + 0.236V + 0.129Nb +
0.251Ti + 0.132Zr) ≦ 0 is satisfied.
【0007】請求項2記載の耐摩耗性、耐腐食性に優れ
た製鉄熱間圧延設備用部材は、電磁誘導加熱コイルを備
えた耐火性加熱型の下部に、冷却型を一体的に配置した
組み合わせモールドを用い、該組み合わせモールドの内
部に鋼を素材とする中実又は、中空の母材を同心垂直に
挿入し、該母材の外周の環状空隙部に、別途準備した溶
湯を注入し、前記母材を断続的に降下させて、該母材外
表面に前記溶湯を溶着させながら、冷却により凝固せし
めて、該母材の外周に肉盛層を形成し、所定の熱処理、
機械加工を行なって製造される耐摩耗性、耐腐食性に優
れた製鉄熱間圧延設備用部材であって、前記溶湯の成分
は、〔C〕0.5〜2.5重量%、〔Si〕0.3〜
3.0重量%、〔Mn〕0.3〜3.0重量%、〔C
r〕2.0〜15.0重量%、〔Mo〕2.0〜15.
0重量%、〔V〕2.0〜15.0重量%、〔W〕1
0.0重量%以下、〔Co〕10.0重量%以下、〔N
i〕0.5〜10.0重量%、残部は実質的にFe及び
不可避的不純物元素からなると共に、−2≦C−(0.
06Cr+0.063Mo+0.033W+0.236
V)≦0の式を満足する。According to a second aspect of the present invention, there is provided a member for hot rolling equipment having excellent wear resistance and corrosion resistance, in which a cooling mold is integrally disposed below a refractory heating mold having an electromagnetic induction heating coil. Using a combination mold, a solid or hollow base material made of steel is inserted concentrically and vertically into the interior of the combination mold, and a separately prepared molten metal is injected into an annular space around the base material, The base material is intermittently lowered and solidified by cooling while welding the molten metal to the outer surface of the base material to form a build-up layer on the outer periphery of the base material, a predetermined heat treatment,
A member for an iron-making hot rolling facility having excellent wear resistance and corrosion resistance manufactured by machining, wherein the component of the molten metal is [C] 0.5 to 2.5% by weight, [Si] 0.3 ~
3.0% by weight, [Mn] 0.3 to 3.0% by weight, [C
r] 2.0-15.0% by weight, [Mo] 2.0-15.
0% by weight, [V] 2.0 to 15.0% by weight, [W] 1
0.0% by weight or less, [Co] 10.0% by weight or less, [N
i] 0.5 to 10.0% by weight, the balance being substantially composed of Fe and inevitable impurity elements, and -2 ≦ C- (0.
06Cr + 0.063Mo + 0.033W + 0.236
V) ≦ 0 is satisfied.
【0008】そして、請求項3記載の耐摩耗性、耐腐食
性に優れた製鉄熱間圧延設備用部材は、電磁誘導加熱コ
イルを備えた耐火性加熱型の下部に、冷却型を一体的に
配置した組み合わせモールドを用い、該組み合わせモー
ルドの内部に鋼を素材とする中実又は、中空の母材を同
心垂直に挿入し、該母材の外周の環状空隙部に、別途準
備した溶湯を注入し、前記母材を断続的に降下させて、
該母材外表面に前記溶湯を溶着させながら、冷却により
凝固せしめて、該母材の外周に肉盛層を形成し、所定の
熱処理、機械加工を行なって製造される耐摩耗性、耐腐
食性に優れた製鉄熱間圧延設備用部材であって、前記溶
湯の成分は、〔C〕0.5〜2.5重量%、〔Si〕
0.3〜3.0重量%、〔Mn〕0.3〜3.0重量
%、〔Cr〕2.0〜15.0重量%、〔Mo〕2.0
〜15.0重量%、〔V〕2.0〜15.0重量%、
〔W〕10.0重量%以下、〔Co〕10.0重量%以
下、〔Ni〕0.5〜10.0重量%、及び〔Nb〕
0.5〜5.0重量%、〔Ti〕0.5〜5.0重量
%、〔Zr〕0.5〜5.0重量%からなる群から選ば
れた1種又は2種以上、残部は実質的にFe及び不可避
的不純物元素からなると共に、−2≦C−(0.06C
r+0.063Mo+0.033W+0.236V+
0.129Nb+0.251Ti+0.132Zr)≦
0の式を満足する。According to a third aspect of the present invention, there is provided a member for an iron making hot rolling facility having excellent wear resistance and corrosion resistance, wherein a cooling mold is integrally formed below a fire resistant heating mold provided with an electromagnetic induction heating coil. Using the placed combination mold, a solid or hollow base material made of steel is inserted concentrically and vertically into the inside of the combination mold, and a separately prepared molten metal is injected into an annular space around the base material. And lowering the base material intermittently,
While the molten metal is being welded to the outer surface of the base material, it is solidified by cooling to form a build-up layer on the outer periphery of the base material, and is subjected to predetermined heat treatment and machining to produce wear resistance and corrosion resistance. It is a member for an iron making hot rolling facility excellent in heat resistance, wherein the component of the molten metal is [C] 0.5 to 2.5% by weight, [Si]
0.3 to 3.0% by weight, [Mn] 0.3 to 3.0% by weight, [Cr] 2.0 to 15.0% by weight, [Mo] 2.0
-15.0% by weight, [V] 2.0-15.0% by weight,
[W] 10.0% by weight or less, [Co] 10.0% by weight or less, [Ni] 0.5 to 10.0% by weight, and [Nb]
One or more selected from the group consisting of 0.5 to 5.0% by weight, [Ti] 0.5 to 5.0% by weight, [Zr] 0.5 to 5.0% by weight, and the balance Consists essentially of Fe and unavoidable impurity elements, and -2 ≦ C- (0.06C
r + 0.063Mo + 0.033W + 0.236V +
0.129Nb + 0.251Ti + 0.132Zr) ≦
0 is satisfied.
【0009】[0009]
【発明の実施の形態】続いて、添付した図面を参照しつ
つ、本発明を具体化した実施の形態につき説明し、本発
明の理解に供する。ここに、図1は本発明の実施の形態
に係る耐摩耗性、耐腐食性に優れた製鉄熱間圧延設備用
部材の製造に好適に使用できる組み合わせモールドの概
略説明図、図2は発明材及び比較材を使用したロールの
単位面積当たり摩耗減量を示すグラフ、図3は発明材及
び比較材を使用したロールの単位面積当たり腐食減量を
示すグラフである。まず、本発明の実施の形態に係る耐
摩耗性、耐腐食性に優れた製鉄熱間圧延設備用部材の製
造に好適に使用できる組み合わせモールド10は、図1
に示すように、電磁誘導加熱コイル11が内部に配置さ
れた中空環状の耐火枠12を備えた耐火性加熱型13
と、耐火性加熱型13の下部に配置され、これと同軸の
内孔を有する冷却型14とを有し、その下部には図示し
ない油圧シリンダーなどの昇降手段によって上下し、上
部に搭載されたロールからなる製鉄熱間圧延設備用部材
15を徐々に降下させる昇降装置16を備えている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a schematic explanatory view of a combination mold that can be suitably used for manufacturing a member for a hot rolling equipment having excellent wear resistance and corrosion resistance according to an embodiment of the present invention, and FIG. FIG. 3 is a graph showing the weight loss per unit area of the roll using the comparative material, and FIG. 3 is a graph showing the corrosion loss per unit area of the roll using the inventive material and the comparative material. First, a combination mold 10 according to an embodiment of the present invention, which can be suitably used for manufacturing a member for a hot rolling equipment for steel making having excellent wear resistance and corrosion resistance, is shown in FIG.
As shown in the figure, a refractory heating mold 13 having a hollow annular refractory frame 12 in which an electromagnetic induction heating coil 11 is disposed.
And a cooling mold 14 disposed below the refractory heating mold 13 and having a coaxial inner hole. The cooling mold 14 has a lower part which is moved up and down by a lifting means such as a hydraulic cylinder (not shown) and mounted on the upper part. An elevating device 16 for gradually lowering the member 15 for hot rolling equipment made of rolls is provided.
【0010】この組み合わせモールド10を使用して、
製鉄熱間圧延設備用部材15を製造する場合には、組み
合わせモールド10の中央に中実又は、中空の母材17
を挿入する。次いで、別途溶解炉18にて準備した外層
になる肉盛材の溶湯19を、前記母材17と組み合わせ
モールド10との環状空隙部20に、電磁誘導加熱コイ
ル11に電流を流しながら注入し、母材17を断続的に
降下させる。これによって、溶湯19は母材17の表面
に溶着しながら、前記冷却型14によって順次冷却凝固
され肉盛層21が特殊な鋳掛け法により形成される。こ
の後、製品より少し大きい外径寸法に機械加工し、次に
所定の焼入れ、焼き戻し等の熱処理を行い、更に製品寸
法への機械加工を行って製鉄熱間圧延設備用部材15が
製造される。この場合において、母材17の外周に予め
ホウケイ酸ガラス皮膜22を形成させておき、組み合わ
せモールド10の上に配置された予熱用の電磁誘導加熱
コイル23によって母材17を予熱すると共に、ホウケ
イ酸ガラス皮膜22が溶融焼成されることによって、母
材17の表面を清浄に保ちながら肉盛層21を形成でき
る。なお、図1において、24は芯出し装置、25は溶
融部、26は溶融フラックスを示す。Using this combination mold 10,
When manufacturing the member 15 for steelmaking hot rolling equipment, a solid or hollow base material 17 is provided at the center of the combination mold 10.
Insert Next, the molten metal 19 of the overlay material prepared as the outer layer separately prepared in the melting furnace 18 is injected into the annular gap 20 between the base material 17 and the combination mold 10 while applying a current to the electromagnetic induction heating coil 11, The base material 17 is lowered intermittently. As a result, the molten metal 19 is sequentially cooled and solidified by the cooling mold 14 while being welded to the surface of the base material 17, and the overlay 21 is formed by a special casting method. Thereafter, machining is performed to an outer diameter slightly larger than the product, and then heat treatment such as predetermined quenching and tempering is performed, and further machining is performed to the product dimensions, thereby producing a member 15 for steelmaking hot rolling equipment. You. In this case, a borosilicate glass film 22 is formed in advance on the outer periphery of the base material 17, and the base material 17 is preheated by the electromagnetic induction heating coil 23 for preheating arranged on the combination mold 10, and the borosilicate By melting and firing the glass coating 22, the build-up layer 21 can be formed while keeping the surface of the base material 17 clean. In addition, in FIG. 1, 24 is a centering device, 25 is a fusion part, and 26 is a fusion flux.
【0011】ここで、前記肉盛層21の成分、即ち溶湯
19の成分としては、第1の実施の形態として、〔C〕
0.5〜2.5重量%、〔Si〕0.3〜3.0重量
%、〔Mn〕0.3〜3.0重量%、〔Cr〕2.0〜
15.0重量%、〔Mo〕2.0〜15.0重量%、
〔V〕2.0〜15.0重量%、〔W〕10.0重量%
以下、〔Co〕10.0重量%以下、及び〔Nb〕0.
5〜5.0重量%、〔Ti〕0.5〜5.0重量%、
〔Zr〕0.5〜5.0重量%からなる群から選ばれた
1種又は2種以上、残部は実質的にFe及び不可避的不
純物元素からなると共に、−2≦C−(0.06Cr+
0.063Mo+0.033W+0.236V+0.1
29Nb+0.251Ti+0.132Zr)≦0の式
を満足する。Here, the components of the build-up layer 21, that is, the components of the molten metal 19, are as in the first embodiment [C]
0.5 to 2.5% by weight, [Si] 0.3 to 3.0% by weight, [Mn] 0.3 to 3.0% by weight, [Cr] 2.0 to
15.0% by weight, [Mo] 2.0 to 15.0% by weight,
[V] 2.0-15.0% by weight, [W] 10.0% by weight
Hereinafter, [Co] 10.0% by weight or less, and [Nb] 0.
5 to 5.0% by weight, [Ti] 0.5 to 5.0% by weight,
[Zr] One or more selected from the group consisting of 0.5 to 5.0% by weight, the balance being substantially composed of Fe and unavoidable impurity elements, and -2 ≦ C− (0.06Cr +
0.063Mo + 0.033W + 0.236V + 0.1
29Nb + 0.251Ti + 0.132Zr) ≦ 0.
【0012】また、第2の実施の形態として、前記肉盛
層21の成分、即ち溶湯19の成分は、〔C〕0.5〜
2.5重量%、〔Si〕0.3〜3.0重量%、〔M
n〕0.3〜3.0重量%、〔Cr〕2.0〜15.0
重量%、〔Mo〕2.0〜15.0重量%、〔V〕2.
0〜15.0重量%、〔W〕10.0重量%以下、〔C
o〕10.0重量%以下、〔Ni〕0.5〜10.0重
量%、残部は実質的にFe及び不可避的不純物元素から
なると共に、−2≦C−(0.06Cr+0.063M
o+0.033W+0.236V)≦0の式を満足す
る。Further, as a second embodiment, the component of the build-up layer 21, that is, the component of the molten metal 19 is [C] 0.5 to 0.5.
2.5% by weight, [Si] 0.3 to 3.0% by weight, [M
n] 0.3 to 3.0% by weight, [Cr] 2.0 to 15.0
% By weight, [Mo] 2.0 to 15.0% by weight, [V] 2.
0 to 15.0% by weight, [W] 10.0% by weight or less, [C
o] 10.0% by weight or less, [Ni] 0.5 to 10.0% by weight, the balance being substantially composed of Fe and unavoidable impurity elements, and -2 ≦ C- (0.06Cr + 0.063M).
o + 0.033W + 0.236V) ≦ 0.
【0013】さらに、第3の実施の形態として、前記肉
盛層21の成分、即ち溶湯19の成分は、〔C〕0.5
〜2.5重量%、〔Si〕0.3〜3.0重量%、〔M
n〕0.3〜3.0重量%、〔Cr〕2.0〜15.0
重量%、〔Mo〕2.0〜15.0重量%、〔V〕2.
0〜15.0重量%、〔W〕10.0重量%以下、〔C
o〕10.0重量%以下、〔Ni〕0.5〜10.0重
量%、及び〔Nb〕0.5〜5.0重量%、〔Ti〕
0.5〜5.0重量%、〔Zr〕0.5〜5.0重量%
からなる群から選ばれた1種又は2種以上、残部は実質
的にFe及び不可避的不純物元素からなると共に、−2
≦C−(0.06Cr+0.063Mo+0.033W
+0.236V+0.129Nb+0.251Ti+
0.132Zr)≦0の式を満足する。Further, as a third embodiment, the component of the build-up layer 21, that is, the component of the molten metal 19 is [C] 0.5
~ 2.5 wt%, [Si] 0.3-3.0 wt%, [M
n] 0.3 to 3.0% by weight, [Cr] 2.0 to 15.0
% By weight, [Mo] 2.0 to 15.0% by weight, [V] 2.
0 to 15.0% by weight, [W] 10.0% by weight or less, [C
o] 10.0% by weight or less, [Ni] 0.5 to 10.0% by weight, and [Nb] 0.5 to 5.0% by weight, [Ti]
0.5 to 5.0% by weight, [Zr] 0.5 to 5.0% by weight
One or more selected from the group consisting of: and the balance substantially consists of Fe and unavoidable impurity elements, and -2.
≤C- (0.06Cr + 0.063Mo + 0.033W
+ 0.236V + 0.129Nb + 0.251Ti +
0.132Zr) ≦ 0.
【0014】次に前記肉盛層21の成分、即ち溶湯19
の成分を上記のように限定した理由について説明する。 (1)C:0.5〜2.5重量% CはCr、Mo、W、V、Nb、Ti、ZrなどとM23
C6 、M2 C、MC型の極めて硬い炭化物を形成し、耐
摩耗性を向上させる。また、基地に固溶し、焼入れ性を
向上させると共に、基地の強度、硬さを向上させる。
0.5重量%未満では、炭化物が減少して耐摩耗性が低
下し、また、2.5重量%を越えると、ネット状の炭化
物が多くなり、靱性が低下すると共に、Cr炭化物も増
え、基地への固溶Crが減少し、耐腐食性が低下するた
めである。 (2)Si:0.3〜3.0重量% Siは脱酸剤として必要であるが、0.3重量%未満で
は効果がなく、また、3.0重量%を越えると脱酸効果
も飽和するため、下限、上限をそれぞれ0.3、3.0
重量%とした。Next, the components of the build-up layer 21, that is, the melt 19
The reason why the component is limited as described above will be described. (1) C: 0.5~2.5 wt% C is Cr, Mo, W, V, Nb, Ti, Zr , etc. and M 23
It forms extremely hard carbide of C 6 , M 2 C and MC type and improves wear resistance. In addition, it forms a solid solution in the matrix, improves the quenching properties, and improves the strength and hardness of the matrix.
If the amount is less than 0.5% by weight, the amount of carbides decreases and the wear resistance decreases. If the amount exceeds 2.5% by weight, the amount of net-like carbides increases, the toughness decreases, and the amount of Cr carbides increases. This is because the amount of dissolved Cr in the matrix decreases, and the corrosion resistance decreases. (2) Si: 0.3 to 3.0% by weight Si is required as a deoxidizing agent, but if it is less than 0.3% by weight, it has no effect, and if it exceeds 3.0% by weight, it has a deoxidizing effect. Because of saturation, the lower and upper limits are 0.3 and 3.0, respectively.
% By weight.
【0015】(3)Mn:0.3〜3.0重量% Mnは脱酸剤として働くほか、不純物として混入する有
害なSをMnSとして固定するが、0.3重量%未満で
は効果がなく、3.0重量%を越えてもそれ以上の効果
はないため、下限を0.3重量%、上限を3.0重量%
とした。 (4)Cr:2.0〜15.0重量% Crは基地に固溶し、硬化性を高めると共に、耐腐食
性、耐酸化性を向上させるのに必要であるが、2.0重
量%未満ではその効果が小さく、15.0重量%を越え
ると耐焼付き性を劣化させ、粗大なCr炭化物が生成す
るため、下限、上限をそれぞれ2.0重量%、15.0
重量%とした。特に、耐腐食性を高めるためには7.5
重量%以上添加することが好ましい。(3) Mn: 0.3 to 3.0% by weight Mn not only functions as a deoxidizing agent, but also fixes harmful S mixed as an impurity as MnS. When the content exceeds 3.0% by weight, no further effect is obtained. Therefore, the lower limit is 0.3% by weight and the upper limit is 3.0% by weight.
And (4) Cr: 2.0 to 15.0% by weight Cr is dissolved in the matrix to enhance the hardenability, and is necessary for improving corrosion resistance and oxidation resistance. If it is less than 15.0% by weight, the effect is small. If it exceeds 15.0% by weight, the seizure resistance is deteriorated and coarse Cr carbides are formed.
% By weight. In particular, 7.5 is required to enhance corrosion resistance.
It is preferable to add at least by weight.
【0016】(5)Mo:2.0〜15.0重量% Moは一部基地に固溶し、焼戻し軟化抵抗を高め、また
Cと結びついて耐摩耗性に有効なM2 C炭化物を形成す
る。2.0重量%未満ではその効果が小さく、15.0
重量%を越えるとM2 C炭化物が顕著に粗大化すること
から、下限、上限をそれぞれ2.0重量%、15.0重
量%とした。 (6)V:2.0〜15.0重量% Vは最も炭化物の形成傾向が大きくMC炭化物を形成
し、2.0重量%未満ではMCの量が少なく、耐摩耗性
が十分得られず、またM2 C炭化物の粗大化を抑制でき
ず、15.0重量%を越えるとMC炭化物が粗大化し、
機械的性質を低下させることから、下限を2.0重量
%、上限を15.0重量%とした。特に、MC炭化物の
効果を高めるために5.0重量%以上添加することが好
ましい。 (7)W:10.0重量%以下 Wは、Moと同じように、焼戻し軟化抵抗を高めると共
に、耐摩耗性に有効なM2 C炭化物を形成するが、1
0.0重量%を越えるとM2 C炭化物が粗大化すること
から、上限を10.0重量%とした。(5) Mo: 2.0 to 15.0% by weight Mo forms a solid solution in a part of the matrix, increases the tempering softening resistance, and combines with C to form an M 2 C carbide effective for abrasion resistance. I do. If it is less than 2.0% by weight, the effect is small, and 15.0%
If the content exceeds% by weight, M 2 C carbides are remarkably coarsened. Therefore, the lower and upper limits are set to 2.0% by weight and 15.0% by weight, respectively. (6) V: 2.0 to 15.0% by weight V has the largest tendency to form carbides and forms MC carbides. If less than 2.0% by weight, the amount of MC is small, and sufficient wear resistance cannot be obtained. Also, it is not possible to suppress the coarsening of M 2 C carbide, and if it exceeds 15.0% by weight, the MC carbide becomes coarse,
The lower limit was set to 2.0% by weight and the upper limit was set to 15.0% by weight because the mechanical properties were reduced. In particular, it is preferable to add 5.0% by weight or more to enhance the effect of MC carbide. (7) W: 10.0% by weight or less W, like Mo, increases the temper softening resistance and forms M 2 C carbide effective for abrasion resistance.
If the content exceeds 0.0% by weight, M 2 C carbides become coarse, so the upper limit is set to 10.0% by weight.
【0017】(8)Co:10.0重量%以下 Coは、大部分が基地に固溶し、基地強度を向上させ、
特に、高温でその効果が大きい。MC炭化物、M2 C炭
化物などの極めて硬く、耐摩耗性に有効な炭化物が存在
する場合、基地も炭化物にバランスした硬さ、強度がな
いと炭化物の周囲の基地が極めて短時間で摩耗し肌荒れ
をもたらすので、炭化物に見合った基地の強度が必要と
なる。また、Coは耐腐食性に極めて有効である。上限
を10.0重量%としたのは、それを越えて加えても効
果がなく、また高価なためである。 (9)Ni:0.5〜10.0重量% Niは、大部分が基地に固溶し、基地の強度、硬さ、耐
腐食性及び材料の焼入れ性を向上させるが、0.5重量
%未満ではその効果がなく、10.0重量%を越えると
残留オーステナイトの増加がもたらされ、割れや肌荒れ
などの問題が生じることがあり、下限、上限をそれぞれ
0.5重量%、10.0重量%とした。(8) Co: 10.0% by weight or less Co mostly forms a solid solution in the matrix to improve the matrix strength,
In particular, the effect is large at high temperatures. If carbides such as MC carbides and M 2 C carbides are extremely hard and effective for abrasion resistance, the bases of the bases will also wear out in a very short time if the bases do not have the hardness and strength that are effective for wear resistance. Therefore, the strength of the base corresponding to the carbide is required. Co is extremely effective for corrosion resistance. The reason why the upper limit is set to 10.0% by weight is that there is no effect even if it is added beyond that, and that it is expensive. (9) Ni: 0.5 to 10.0% by weight Ni is mostly dissolved in the matrix to improve the strength, hardness, corrosion resistance and quenching property of the matrix. If the amount is less than 10.0% by weight, the amount of retained austenite is increased, and problems such as cracks and rough skin may occur. 0% by weight.
【0018】(10)Nb:0.5 〜5.0 重量%、Ti:
0.5 〜5.0 重量%、Zr:0.5 〜5.0 重量%の中の1種
又は2種以上 Nb、Ti、Zrを適量添加することがロール性能を向
上させるのに有効である。Nb、Ti、ZrはVと同様
Cと結合し易く、MC炭化物を形成することによって、
耐摩耗性を向上させる。Nb、Ti、Zrの効果が実質
的に認められる下限として0.5重量%とした。5.0
重量%を越えるとMC炭化物が顕著に粗大化することか
ら、上限を5.0重量%とした。また、Nb、Ti、Z
rは共に高価なものであるため、コストとの関連で、実
用的にはNb、Ti、Zrの中の1種又は2種以上とし
た。(10) Nb: 0.5 to 5.0% by weight, Ti:
One or more of 0.5 to 5.0% by weight and Zr: 0.5 to 5.0% by weight It is effective to add an appropriate amount of Nb, Ti and Zr to improve the roll performance. Nb, Ti, and Zr are easily bonded to C like V, and by forming MC carbide,
Improves wear resistance. The lower limit at which the effects of Nb, Ti, and Zr are substantially recognized is 0.5% by weight. 5.0
If the content exceeds% by weight, MC carbides are remarkably coarsened. Therefore, the upper limit is set to 5.0% by weight. Also, Nb, Ti, Z
Since both r are expensive, practically, one or more of Nb, Ti, and Zr are selected from the viewpoint of cost.
【0019】本実施の形態の特徴は、前記各合金元素の
含有量を限定すると共に、第1、第3の実施の形態にお
いては、−2≦C−(0.06Cr+0.063Mo+
0.033W+0.236V+0.129Nb+0.2
51Ti+0.132Zr)≦0の式を満足すること、
及び第2の実施の形態においては、−2≦C−(0.0
6Cr+0.063Mo+0.033W+0.236
V)≦0の式を満足することにある。上記( )内の値
は各合金元素の炭化物として化学量論的にバランスする
C量(%)である。Cr、Mo、W、V、Nb、Ti及
びZrは、それぞれM23C6 、M2 C、M2 C、MC、
MC、MC、MCを形成するので、これらの炭化物の種
類及び各合金元素の原子量によって、表1に示すような
炭化物係数(前記式の各合金元素の定数)が得られる。The feature of this embodiment is that the content of each alloy element is limited, and in the first and third embodiments, −2 ≦ C− (0.06Cr + 0.063Mo +
0.033W + 0.236V + 0.129Nb + 0.2
51Ti + 0.132Zr) ≦ 0,
And in the second embodiment, −2 ≦ C− (0.0
6Cr + 0.063Mo + 0.033W + 0.236
V) ≦ 0. The values in parentheses are the amounts of C (%) that are stoichiometrically balanced as carbides of each alloy element. Cr, Mo, W, V, Nb, Ti and Zr, respectively M 23 C 6, M 2 C , M 2 C, MC,
Since MC, MC, and MC are formed, a carbide coefficient (constant of each alloy element in the above formula) as shown in Table 1 can be obtained depending on the type of these carbides and the atomic weight of each alloy element.
【0020】[0020]
【表1】 [Table 1]
【0021】第1、第3の実施の形態における〔C−
(0.06Cr+0.063Mo+0.033W+0.
236V+0.129Nb+0.251Ti+0.13
2Zr)〕の値及び第2の実施の形態における〔C−
(0.06Cr+0.063Mo+0.033W+0.
236V) 〕の値が0より大きい場合は、耐腐食性が十
分得られず、耐肌荒れ性が劣化し、一方前記〔〕の値が
−2より小さい場合は、焼入れ性の低下によって、基地
の強化及び耐摩耗性が十分得られず、耐焼付き性も劣化
するため好ましくない。更には、従来、コイラー用ロー
ル、マンドレル及び鋼板搬送ローラは主として、溶接肉
盛層法により造られていたが、本実施の形態の前記化学
組成の肉盛層のように、C、Cr、Mo、Vの含有量が
高い合金材料の場合では、溶接性が悪く、溶接時に予熱
温度、層間温度などに細心の注意を払っても、なお、割
れ発生の懸念があり、安定した品質を得ることは困難
で、しかも、歩留まり、能率も低くならざるを得なかっ
た。In the first and third embodiments, [C-
(0.06Cr + 0.063Mo + 0.033W + 0.
236V + 0.129Nb + 0.251Ti + 0.13
2Zr)] and [C−
(0.06Cr + 0.063Mo + 0.033W + 0.
When the value of [236V)] is larger than 0, the corrosion resistance is not sufficiently obtained, and the surface roughening resistance is deteriorated. It is not preferable because sufficient reinforcement and abrasion resistance cannot be obtained, and the seizure resistance also deteriorates. Further, conventionally, the roll for the coiler, the mandrel, and the steel sheet conveying roller have been mainly manufactured by the weld overlaying method. However, as in the overlay of the chemical composition of the present embodiment, C, Cr, Mo are used. In the case of alloy materials with high V and V contents, the weldability is poor, and even if careful attention is paid to the preheating temperature, the interlayer temperature, etc. during welding, there is still a risk of cracking, and stable quality is obtained. Was difficult, and the yield and efficiency had to be low.
【0022】前記したような電磁誘導加熱法を利用した
製鉄熱間圧延設備用部材においては、割れ発生の懸念も
なく、いわば、1パスで極めて厚い肉盛層を得ることが
可能で、高能率で安価に複合材を得ることができる。ま
た、冷却型による外表面からの急冷と、低温の母材によ
る内部からの抜熱により急速に凝固冷却するため、成分
組成、金属組成とも極めて均一で、Cr、Mo、V、
W、Nb、Ti、Zrなどの炭化物も均一微細で分布
し、十分な耐摩耗性、耐腐食性を有する製鉄熱間圧延設
備用部材となる。In a member for hot rolling equipment for steel making using the above-described electromagnetic induction heating method, there is no fear of cracking, so to say, an extremely thick overlay can be obtained in one pass, and high efficiency can be obtained. And a composite material can be obtained at low cost. In addition, since the solidification and cooling are rapidly performed by rapid cooling from the outer surface by the cooling mold and heat removal from the inside by the low-temperature base material, the component composition and the metal composition are extremely uniform, and Cr, Mo, V,
Carbides such as W, Nb, Ti, and Zr are also uniformly and finely distributed, so that a member for hot rolling equipment having sufficient abrasion resistance and corrosion resistance can be obtained.
【0023】[0023]
【実施例】以下に、更に本実施の形態に係る耐摩耗性、
耐腐食性に優れた製鉄熱間圧延設備用部材の作用、効果
を確認するために行った実施例を、比較例と共に説明す
る。表2は外層材(肉盛層)の成分組成、硬さ及び製造
法を示したもので、比較材A、B、C及びDは従来から
のコイラー用ロール及び鋼板搬送ローラに適用されてい
る代表的な材料である。発明材E、F及びGは本実施の
形態の代表的な3例である。これらの比較材、及び発明
材は、いずれも所定の焼入れ、焼戻し処理を施した後、
使用層である外層から、それぞれの試験片を切り出し、
摩耗試験及び腐食試験を行い、耐摩耗性及び耐腐食性を
評価した。EXAMPLES The abrasion resistance according to the present embodiment is further described below.
An example performed to confirm the operation and effect of a member for a steel rolling hot rolling facility having excellent corrosion resistance will be described together with a comparative example. Table 2 shows the component composition, hardness, and manufacturing method of the outer layer material (facing layer). Comparative materials A, B, C, and D are applied to conventional rolls for coilers and steel sheet transport rollers. It is a typical material. Invention materials E, F, and G are three typical examples of the present embodiment. These comparative materials, and the invention material, after any given quenching, tempering treatment,
Cut out each test piece from the outer layer, which is the layer used,
An abrasion test and a corrosion test were performed to evaluate abrasion resistance and corrosion resistance.
【0024】[0024]
【表2】 [Table 2]
【0025】(摩耗試験結果)摩耗試験は、150rp
mで回転する直径305mm、粒度#220のエメリー
ペーパーに、9kgfの荷重で10mm角の試験片をエ
メリーペーパーの中心より60mmの箇所に押し付け、
10分後の摩耗減量を測定し、摩耗減量を試験面の面積
で除した値を求め、耐摩耗性を評価した。図2は摩耗試
験結果を示したもので、本発明材は比較材に比べて、極
めて優れた耐摩耗性を有することが判明した。 (腐食試験結果)腐食試験は、コンデンサーを有する三
角フラスコの中に、熱間圧延設備用冷却水を入れて、6
0℃に保持し、長さ20mm×幅15mm×厚み3mm
の試験片を浸漬することによって、試験片の表面を腐食
させ、100時間経過した後に、表面の腐食生成物を除
去し、腐食減量を試験片の面積で除した値を求め、耐腐
食性を評価した。図3は腐食試験結果を示したもので、
本発明材は比較材Dなみで、極めて優れた耐腐食性を有
することが判明した。これらの試験結果から、本発明材
は従来ロール材に比較して、2倍以上の極めて優れた耐
摩耗性を有し、かつ耐腐食性も従来ロール材と同等以上
で、総合的に際立った特性を有することが明らかであ
る。なお、発明材E、F、Gの〔C−(0.06Cr+
0.063Mo+0.033W+0.236V+0.1
29Nb+0.251Ti+0.132Zr)〕の値は
それぞれ、−1.059、−1.054、−0.907
である。(Results of Wear Test) The wear test was performed at 150 rpm.
With a load of 9 kgf, a 10 mm square test piece is pressed against a 60 mm position from the center of the emery paper, with a load of 9 kgf against a 305 mm diameter emery paper rotating at m.
Abrasion loss was measured after 10 minutes, and a value obtained by dividing the abrasion loss by the area of the test surface was determined to evaluate abrasion resistance. FIG. 2 shows the results of the wear test, and it was found that the material of the present invention has extremely excellent wear resistance as compared with the comparative material. (Results of Corrosion Test) The corrosion test was carried out by placing cooling water for hot rolling equipment in an Erlenmeyer flask having a condenser.
Hold at 0 ° C, length 20mm x width 15mm x thickness 3mm
The surface of the test piece was corroded by immersing the test piece, and after 100 hours, the corrosion products on the surface were removed, and the value obtained by dividing the corrosion loss by the area of the test piece was determined. evaluated. FIG. 3 shows the results of the corrosion test.
It was found that the material of the present invention has extremely excellent corrosion resistance as compared with Comparative material D. From these test results, the material of the present invention has extremely excellent abrasion resistance of twice or more as compared with the conventional roll material, and has a corrosion resistance equivalent to or higher than that of the conventional roll material, and is generally outstanding. It is clear that it has properties. In addition, [C- (0.06Cr +) of invention materials E, F, and G
0.063Mo + 0.033W + 0.236V + 0.1
29Nb + 0.251Ti + 0.132Zr)] are -1.059, -1.054, and -0.907, respectively.
It is.
【0026】[0026]
【発明の効果】請求項1〜3記載の耐摩耗性、耐腐食性
に優れた製鉄熱間圧延設備用部材においては、特殊鋳掛
け法により基地中に微細なCr、Mo、V、W、必要に
応じてNb、Ti、Zrなどの炭化物及び、これらの成
分の複合の炭化物を均一に分散させているため、以下の
効果がある。まず、硬いMC炭化物の量が多いこと、及
びCo、必要に応じてNiが基地を強化することによっ
て、本発明材は、硬度がHs85以上で、優れた耐摩耗
性を有する。また、基地が選択的に腐食され、比較的大
きな晶出炭化物が欠落するような腐食摩耗形態が発生し
にくいため、高硬度の炭化物が安定的に表面に付与さ
れ、耐腐食性に優れている。その結果、本発明材はロー
ルの寿命を著しく向上することができる。According to the members for hot rolling equipment having excellent wear resistance and corrosion resistance according to the first to third aspects, fine Cr, Mo, V, W, and fine metals are required in the base by a special casting method. The carbides such as Nb, Ti, Zr and the like and the composite carbides of these components are uniformly dispersed in accordance with the above, so that the following effects are obtained. First, the material of the present invention has a hardness of Hs 85 or more and has excellent wear resistance due to the fact that the amount of hard MC carbide is large and that Co and Ni as necessary strengthen the matrix. In addition, since the base is selectively corroded and a form of corrosive wear in which relatively large crystallized carbide is missing is less likely to occur, a high-hardness carbide is stably applied to the surface, and the corrosion resistance is excellent. . As a result, the material of the present invention can significantly improve the life of the roll.
【図1】本発明の実施の形態に係る耐摩耗性、耐腐食性
に優れた製鉄熱間圧延設備用部材の製造に好適に使用で
きる組み合わせモールドの概略説明図である。FIG. 1 is a schematic explanatory view of a combination mold according to an embodiment of the present invention, which can be suitably used for manufacturing a member for a steel hot rolling equipment having excellent wear resistance and corrosion resistance.
【図2】発明材及び比較材を使用したロールの単位面積
当たり摩耗減量を示すグラフである。FIG. 2 is a graph showing a reduction in wear per unit area of a roll using an inventive material and a comparative material.
【図3】発明材及び比較材を使用したロールの単位面積
当たり腐食減量を示すグラフである。FIG. 3 is a graph showing a corrosion loss per unit area of a roll using an inventive material and a comparative material.
10 組み合わせモールド 11 電磁誘導
加熱コイル 12 耐火枠 13 耐火性加
熱型 14 冷却型 15 製鉄熱間
圧延設備用部材 16 昇降装置 17 母材 18 溶解炉 19 溶湯 20 環状空隙部 21 肉盛層 22 ホウケイ酸ガラス皮膜 23 予熱用の
電磁誘導加熱コイル 24 芯出し装置 25 溶融部 26 溶融フラックスDESCRIPTION OF SYMBOLS 10 Combination mold 11 Electromagnetic induction heating coil 12 Fireproof frame 13 Fireproof heating type 14 Cooling type 15 Member for steelmaking hot rolling equipment 16 Elevating device 17 Base material 18 Melting furnace 19 Molten metal 20 Annular gap 21 Overlay layer 22 Borosilicate glass Coating 23 Electromagnetic induction heating coil for preheating 24 Centering device 25 Melting part 26 Melting flux
フロントページの続き (51)Int.Cl.6 識別記号 FI B22D 11/00 B22D 11/00 N 19/16 19/16 E C22C 38/38 C22C 38/38 Continued on the front page (51) Int.Cl. 6 Identification code FI B22D 11/00 B22D 11/00 N 19/16 19/16 E C22C 38/38 C22C 38/38
Claims (3)
型の下部に、冷却型を一体的に配置した組み合わせモー
ルドを用い、該組み合わせモールドの内部に鋼を素材と
する中実又は、中空の母材を同心垂直に挿入し、該母材
の外周の環状空隙部に、別途準備した溶湯を注入し、前
記母材を断続的に降下させて、該母材外表面に前記溶湯
を溶着させながら、冷却により凝固せしめて、該母材の
外周に肉盛層を形成し、所定の熱処理、機械加工を行な
って製造される耐摩耗性、耐腐食性に優れた製鉄熱間圧
延設備用部材であって、 前記溶湯の成分は、〔C〕0.5〜2.5重量%、〔S
i〕0.3〜3.0重量%、〔Mn〕0.3〜3.0重
量%、〔Cr〕2.0〜15.0重量%、〔Mo〕2.
0〜15.0重量%、〔V〕2.0〜15.0重量%、
〔W〕10.0重量%以下、〔Co〕10.0重量%以
下、及び〔Nb〕0.5〜5.0重量%、〔Ti〕0.
5〜5.0重量%、〔Zr〕0.5〜5.0重量%から
なる群から選ばれた1種又は2種以上、残部は実質的に
Fe及び不可避的不純物元素からなると共に、−2≦C
−(0.06Cr+0.063Mo+0.033W+
0.236V+0.129Nb+0.251Ti+0.
132Zr)≦0の式を満足することを特徴とする耐摩
耗性、耐腐食性に優れた製鉄熱間圧延設備用部材。1. A combination mold in which a cooling mold is integrally disposed below a refractory heating mold provided with an electromagnetic induction heating coil, and a solid or hollow member made of steel is used inside the combination mold. The base material is inserted vertically and concentrically, and a separately prepared molten metal is injected into the annular gap around the base material, the base material is intermittently lowered, and the molten metal is welded to the outer surface of the base material. While being solidified by cooling, a build-up layer is formed on the outer periphery of the base material and subjected to predetermined heat treatment and machining to produce a member for an iron-made hot rolling facility having excellent wear resistance and corrosion resistance. Wherein the components of the molten metal are [C] 0.5 to 2.5% by weight, [S
i] 0.3 to 3.0% by weight, [Mn] 0.3 to 3.0% by weight, [Cr] 2.0 to 15.0% by weight, [Mo] 2.
0 to 15.0% by weight, [V] 2.0 to 15.0% by weight,
[W] 10.0% by weight or less, [Co] 10.0% by weight or less, [Nb] 0.5 to 5.0% by weight, [Ti] 0.
One or more selected from the group consisting of 5 to 5.0% by weight, [Zr] 0.5 to 5.0% by weight, and the balance substantially comprises Fe and unavoidable impurity elements; 2 ≦ C
− (0.06Cr + 0.063Mo + 0.033W +
0.236V + 0.129Nb + 0.251Ti + 0.
132Zr) A member for an iron-making hot rolling facility having excellent wear resistance and corrosion resistance, which satisfies the expression of 0.
型の下部に、冷却型を一体的に配置した組み合わせモー
ルドを用い、該組み合わせモールドの内部に鋼を素材と
する中実又は、中空の母材を同心垂直に挿入し、該母材
の外周の環状空隙部に、別途準備した溶湯を注入し、前
記母材を断続的に降下させて、該母材外表面に前記溶湯
を溶着させながら、冷却により凝固せしめて、該母材の
外周に肉盛層を形成し、所定の熱処理、機械加工を行な
って製造される耐摩耗性、耐腐食性に優れた製鉄熱間圧
延設備用部材であって、 前記溶湯の成分は、〔C〕0.5〜2.5重量%、〔S
i〕0.3〜3.0重量%、〔Mn〕0.3〜3.0重
量%、〔Cr〕2.0〜15.0重量%、〔Mo〕2.
0〜15.0重量%、〔V〕2.0〜15.0重量%、
〔W〕10.0重量%以下、〔Co〕10.0重量%以
下、〔Ni〕0.5〜10.0重量%、残部は実質的に
Fe及び不可避的不純物元素からなると共に、−2≦C
−(0.06Cr+0.063Mo+0.033W+
0.236V)≦0の式を満足することを特徴とする耐
摩耗性、耐腐食性に優れた製鉄熱間圧延設備用部材。2. A combination mold in which a cooling mold is integrally disposed below a refractory heating mold provided with an electromagnetic induction heating coil, and a solid or hollow member made of steel is used inside the combination mold. The base material is inserted vertically and concentrically, and a separately prepared molten metal is injected into the annular gap around the base material, the base material is intermittently lowered, and the molten metal is welded to the outer surface of the base material. While being solidified by cooling, a build-up layer is formed on the outer periphery of the base material and subjected to predetermined heat treatment and machining to produce a member for an iron-made hot rolling facility having excellent wear resistance and corrosion resistance. Wherein the components of the molten metal are [C] 0.5 to 2.5% by weight, [S
i] 0.3 to 3.0% by weight, [Mn] 0.3 to 3.0% by weight, [Cr] 2.0 to 15.0% by weight, [Mo] 2.
0 to 15.0% by weight, [V] 2.0 to 15.0% by weight,
[W] 10.0% by weight or less, [Co] 10.0% by weight or less, [Ni] 0.5 to 10.0% by weight, and the balance substantially consists of Fe and unavoidable impurity elements. ≤C
− (0.06Cr + 0.063Mo + 0.033W +
0.236V) ≦ A member for hot rolling equipment with excellent wear resistance and corrosion resistance, which satisfies the expression of 0.
型の下部に、冷却型を一体的に配置した組み合わせモー
ルドを用い、該組み合わせモールドの内部に鋼を素材と
する中実又は、中空の母材を同心垂直に挿入し、該母材
の外周の環状空隙部に、別途準備した溶湯を注入し、前
記母材を断続的に降下させて、該母材外表面に前記溶湯
を溶着させながら、冷却により凝固せしめて、該母材の
外周に肉盛層を形成し、所定の熱処理、機械加工を行な
って製造される耐摩耗性、耐腐食性に優れた製鉄熱間圧
延設備用部材であって、 前記溶湯の成分は、〔C〕0.5〜2.5重量%、〔S
i〕0.3〜3.0重量%、〔Mn〕0.3〜3.0重
量%、〔Cr〕2.0〜15.0重量%、〔Mo〕2.
0〜15.0重量%、〔V〕2.0〜15.0重量%、
〔W〕10.0重量%以下、〔Co〕10.0重量%以
下、〔Ni〕0.5〜10.0重量%、及び〔Nb〕
0.5〜5.0重量%、〔Ti〕0.5〜5.0重量
%、〔Zr〕0.5〜5.0重量%からなる群から選ば
れた1種又は2種以上、残部は実質的にFe及び不可避
的不純物元素からなると共に、−2≦C−(0.06C
r+0.063Mo+0.033W+0.236V+
0.129Nb+0.251Ti+0.132Zr)≦
0の式を満足することを特徴とする耐摩耗性、耐腐食性
に優れた製鉄熱間圧延設備用部材。3. A combination mold in which a cooling mold is integrally disposed below a refractory heating mold provided with an electromagnetic induction heating coil, and a solid or hollow member made of steel is used inside the combination mold. The base material is inserted vertically and concentrically, and a separately prepared molten metal is injected into the annular gap around the base material, the base material is intermittently lowered, and the molten metal is welded to the outer surface of the base material. While being solidified by cooling, a build-up layer is formed on the outer periphery of the base material and subjected to predetermined heat treatment and machining to produce a member for an iron-made hot rolling facility having excellent wear resistance and corrosion resistance. Wherein the components of the molten metal are [C] 0.5 to 2.5% by weight, [S
i] 0.3 to 3.0% by weight, [Mn] 0.3 to 3.0% by weight, [Cr] 2.0 to 15.0% by weight, [Mo] 2.
0 to 15.0% by weight, [V] 2.0 to 15.0% by weight,
[W] 10.0% by weight or less, [Co] 10.0% by weight or less, [Ni] 0.5 to 10.0% by weight, and [Nb]
One or more selected from the group consisting of 0.5 to 5.0% by weight, [Ti] 0.5 to 5.0% by weight, [Zr] 0.5 to 5.0% by weight, and the balance Consists essentially of Fe and unavoidable impurity elements, and -2 ≦ C- (0.06C
r + 0.063Mo + 0.033W + 0.236V +
0.129Nb + 0.251Ti + 0.132Zr) ≦
A member for hot rolling equipment for steel making, which is excellent in abrasion resistance and corrosion resistance, which satisfies the formula of 0.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3325797A JPH10212552A (en) | 1997-01-30 | 1997-01-30 | Member for steel making hot rolling equipment excellent in wear resistance and corrosion-resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3325797A JPH10212552A (en) | 1997-01-30 | 1997-01-30 | Member for steel making hot rolling equipment excellent in wear resistance and corrosion-resistance |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10212552A true JPH10212552A (en) | 1998-08-11 |
Family
ID=12381464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3325797A Pending JPH10212552A (en) | 1997-01-30 | 1997-01-30 | Member for steel making hot rolling equipment excellent in wear resistance and corrosion-resistance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10212552A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017086281A1 (en) | 2015-11-17 | 2017-05-26 | 株式会社フジコー | Roll for hot rolling process and method for manufacturing same |
CN107891138A (en) * | 2017-11-09 | 2018-04-10 | 常州凯达重工科技有限公司 | A kind of preparation technology for being used to make the super high-vanadium high-speed steel pressure roller of corrugated metal sheet |
-
1997
- 1997-01-30 JP JP3325797A patent/JPH10212552A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017086281A1 (en) | 2015-11-17 | 2017-05-26 | 株式会社フジコー | Roll for hot rolling process and method for manufacturing same |
EP3636360A1 (en) | 2015-11-17 | 2020-04-15 | Fujico Co., Ltd. | Roll for hot rolling process and method for manufacturing same |
US11207721B2 (en) | 2015-11-17 | 2021-12-28 | Fujico Co., Ltd. | Roll for hot rolling process and method for manufacturing same |
CN107891138A (en) * | 2017-11-09 | 2018-04-10 | 常州凯达重工科技有限公司 | A kind of preparation technology for being used to make the super high-vanadium high-speed steel pressure roller of corrugated metal sheet |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0309587B1 (en) | Abrasion-resistant composite roll and process for its production | |
EP0646052B1 (en) | Rolls for metal shaping | |
WO1994022606A1 (en) | Wear- and seizure-resistant roll for hot rolling | |
WO2020032144A1 (en) | Centrifugal cast composite roll for rolling and manufacturing method therefor | |
TWI629366B (en) | Ferrous iron series stainless steel plate | |
JP6621650B2 (en) | Roll for hot rolling process and manufacturing method thereof | |
JP2700591B2 (en) | Centrifugal casting composite roll | |
JPH10212552A (en) | Member for steel making hot rolling equipment excellent in wear resistance and corrosion-resistance | |
JP2848646B2 (en) | Manufacturing method of roll for coiler in hot rolling equipment | |
JP3294846B2 (en) | Fe-Cr-Al alloy steel sheet and method for producing the same | |
JPH0970655A (en) | Member for hot-rolling equipment in iron works excellent in wear resistance and corrosion resistance | |
JPH0649914B2 (en) | Quenching roll for rolling and rolling mill | |
JP3030078B2 (en) | Abrasion-resistant composite roll excellent in skin roughness resistance and method for producing the same | |
JP2002346613A (en) | Composite roll for hot rolling and hot rolling method using the same | |
JPH0775808A (en) | Wear resistant composite roll for rolling shape steel | |
JP2000158020A (en) | Composite roll for iron manufacturing rolling equipment, excellent in impact resistance and corrosion resistanve | |
JP2878544B2 (en) | Centrifugal casting composite roll | |
JPH0999306A (en) | Roll for hot rolling | |
JP3030077B2 (en) | Abrasion-resistant composite roll excellent in crack resistance and method for producing the same | |
JP3230899B2 (en) | Heat treatment of graphite-containing high-speed cast iron and composite rolls | |
JPH03126838A (en) | Composite roll | |
JP3019240B2 (en) | Centrifugal casting composite roll | |
JPH0692007B2 (en) | Work roll for hot rolling and rolling method thereof | |
JPH05320747A (en) | Production of highly wear resistant roll | |
JP2810762B2 (en) | Wear resistant composite roll |